发布时间:2025-02-07 08:01:39
为上安装示意图,因为螺钉底部它有一个锥形,而且外壳有开几个槽,当旋紧螺母时,就会让锥面挤压外壳,外壳因有开槽,它就会向外变形,从而紧锁住墙体.
所以这并不是剪力,应该为斜面(锥面)挤压力
成都空中森林小区,家家户户都有私人花园,你愿意住这样的房子吗
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